public class test {
    public static void main(String[] args) {
        Chinese chinese=new Chinese();
        American american=new American();
        Beijingman beijingman = new Beijingman();
        chinese.speakHello();
        american.speakHello();
        beijingman.speakHello();
        chinese.averageHeight();
        american.averageHeight();
        beijingman.averageHeight();
        chinese.averageWeight();
        american.averageWeight();
        beijingman.averageWeight();
        chinese.chinaGongfu();
    }
}
